645246400

素因数分解:

$2^6\times 5^2\times {\mathrm{31}}^1\times {\mathrm{13009}}^1$

素因数の和:13062

約数の個数: 84

約数和(自身を含む): 1639051840

約数和(自身を除く): 993805440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 155, 160, 200, 248, 310, 320, 400, 496, 620, 775, 800, 992, 1240, 1550, 1600, 1984, 2480, 3100, 4960, 6200, 9920, 12400, 13009, 24800, 26018, 49600, 52036, 65045, 104072, 130090, 208144, 260180, 325225, 403279, 416288, 520360, 650450, 806558, 832576, 1040720, 1300900, 1613116, 2016395, 2081440, 2601800, 3226232, 4032790, 4162880, 5203600, 6452464, 8065580, 10081975, 10407200, 12904928, 16131160, 20163950, 20814400, 25809856, 32262320, 40327900, 64524640, 80655800, 129049280, 161311600, 322623200, 645246400]

約数ペア:

[(1, 645246400), (2, 322623200), (4, 161311600), (5, 129049280), (8, 80655800), (10, 64524640), (16, 40327900), (20, 32262320), (25, 25809856), (31, 20814400), (32, 20163950), (40, 16131160), (50, 12904928), (62, 10407200), (64, 10081975), (80, 8065580), (100, 6452464), (124, 5203600), (155, 4162880), (160, 4032790), (200, 3226232), (248, 2601800), (310, 2081440), (320, 2016395), (400, 1613116), (496, 1300900), (620, 1040720), (775, 832576), (800, 806558), (992, 650450), (1240, 520360), (1550, 416288), (1600, 403279), (1984, 325225), (2480, 260180), (3100, 208144), (4960, 130090), (6200, 104072), (9920, 65045), (12400, 52036), (13009, 49600), (24800, 26018)]